Techniques are described for wireless communication at a wireless device. One method includes identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities; identifying an absence of a predetermined transmission type in each of a number of clear channel assessment (CCA) slots of the transmission interval, in which each of the number of CCA slots is associated with a higher priority than the identified priority of the wireless device; and communicating over the radio frequency spectrum band based at least in part on the identified absence of the predetermined transmission type in each of the number of CCA slots associated with the higher priority than the priority of the wireless device.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for wireless communication at a wireless device, comprising: identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities, the transmission interval corresponding to fixed time resources in a frame, wherein the priority of the wireless device is based at least in part on a proximity of the transmission interval to a sub-interval; identifying an absence of a reservation transmission type associated with a second wireless device having a higher priority during each of a number of clear channel assessment (CCA) slots of the transmission interval based at least in part on monitoring the radio frequency spectrum band during the number of CCA slots, each of the number of CCA slots being associated with a higher priority than the identified priority of the wireless device; and communicating over the radio frequency spectrum band for a remainder of the transmission interval subsequent to the number of CCA slots in the frame, the communicating based at least in part on the identified absence of the reservation transmission type associated with the second wireless device in each CCA slot of the number of CCA slots associated with the higher priority than the priority of the wireless device, and the communicating comprising receiving data and transmitting data subsequent to the receiving data over the radio frequency spectrum band during the transmission interval.
This invention relates to wireless communication in shared radio frequency spectrum bands, addressing the challenge of coordinating transmissions among multiple network operating entities to avoid interference. The method involves a wireless device determining its priority for a specific transmission interval within a frame, where the priority is influenced by the proximity of the interval to a sub-interval. The device then monitors the spectrum during multiple clear channel assessment (CCA) slots within the interval, each slot corresponding to a higher priority level than the device's own. If no reservation transmissions from higher-priority devices are detected in any of these slots, the device proceeds to communicate over the spectrum for the remaining duration of the interval. Communication includes receiving data followed by transmitting data within the same interval. The approach ensures efficient spectrum utilization while respecting priority-based access rules, reducing collisions and improving reliability in shared wireless environments.
2. The method of claim 1 , wherein the communicating comprises: transmitting a preamble over the radio frequency spectrum band, the preamble transmitted in a CCA slot of the transmission interval, the CCA slot allocated for the wireless device based at least in part on the identified priority of the wireless device.
This invention relates to wireless communication systems, specifically methods for managing transmissions in shared radio frequency spectrum bands. The problem addressed is efficient and fair allocation of transmission opportunities among wireless devices with varying priorities, particularly in environments where multiple devices compete for access to the same frequency band. The method involves a wireless device identifying its priority level, which determines its access rights to the shared spectrum. The device then communicates by transmitting a preamble during a Clear Channel Assessment (CCA) slot within a transmission interval. The CCA slot is specifically allocated to the device based on its identified priority, ensuring higher-priority devices gain access before lower-priority ones. This structured approach prevents collisions and ensures fair spectrum utilization. The preamble transmission serves as a signal to other devices that the channel is occupied, allowing them to defer their transmissions accordingly. The priority-based allocation of CCA slots ensures that critical or time-sensitive communications are prioritized, improving overall system efficiency and reliability. This method is particularly useful in unlicensed or shared spectrum environments where multiple devices must coexist without centralized coordination.
3. The method of claim 2 , further comprising: signaling a length of the transmission interval in the preamble.
Technical Summary: This invention relates to wireless communication systems, specifically methods for improving transmission efficiency by dynamically adjusting transmission intervals. The problem addressed is the need for flexible and efficient signaling of transmission durations in wireless networks to optimize resource usage and reduce overhead. The method involves signaling the length of a transmission interval within the preamble of a communication frame. The preamble is a control section at the beginning of a transmission that carries essential information for decoding the subsequent data. By including the transmission interval length in the preamble, the system enables receivers to quickly determine the duration of the upcoming transmission without requiring additional signaling. This reduces latency and improves synchronization between transmitting and receiving devices. The transmission interval length may be encoded in various ways, such as through a fixed-length field or a variable-length field, depending on the system requirements. The method ensures compatibility with existing wireless protocols while enhancing flexibility in transmission scheduling. This approach is particularly useful in high-density networks where efficient use of airtime is critical. The invention also includes mechanisms to handle different types of transmissions, such as data, control, or management frames, by dynamically adjusting the signaled interval length based on the transmission type. This ensures optimal performance across diverse communication scenarios. The method is applicable to various wireless standards, including but not limited to Wi-Fi, cellular networks, and IoT protocols.
4. The method of claim 1 , wherein the communicating comprises: transmitting a reservation message over the radio frequency spectrum band, the reservation message transmitted in a CCA slot of the transmission interval, the CCA slot associated with the priority of the wireless device; detecting, in the CCA slot, an acknowledgement message transmitted over the radio frequency spectrum band in response to the reservation message; and transmitting or receiving data over the radio frequency spectrum band, during the transmission interval, based at least in part on the detecting of the acknowledgement message.
This invention relates to wireless communication systems, specifically methods for managing data transmission in shared radio frequency spectrum bands. The problem addressed is efficient and reliable communication in environments where multiple devices compete for access to the same frequency resources, such as unlicensed or shared spectrum bands. The method involves a wireless device transmitting a reservation message during a clear channel assessment (CCA) slot within a transmission interval. The CCA slot is selected based on the device's priority level, ensuring higher-priority devices gain access first. The reservation message signals intent to use the spectrum for data transmission. If the device detects an acknowledgement message from another device in response to the reservation message, it proceeds to transmit or receive data during the allocated transmission interval. This ensures coordinated access, reducing collisions and improving spectrum utilization. The method also includes mechanisms for handling contention, where multiple devices may attempt to reserve the same slot. By prioritizing devices and confirming reservations through acknowledgements, the system minimizes conflicts and optimizes throughput. The approach is particularly useful in dense wireless networks where spectrum sharing is critical, such as in IoT or 5G NR-U deployments. The invention enhances reliability and efficiency in shared spectrum environments by structuring access around priority-based reservations and acknowledgements.
5. The method of claim 4 , wherein the reservation message comprises a Request to Send (RTS) message and the acknowledgement message comprises a Clear to Send (CTS) message.
This invention relates to wireless communication systems, specifically methods for managing channel access and reservations in shared communication environments. The problem addressed is the need for efficient and reliable channel reservation mechanisms to prevent collisions and ensure smooth data transmission in wireless networks. The method involves a communication device sending a reservation message to reserve a communication channel for transmitting data. The reservation message is structured as a Request to Send (RTS) message, which signals to other devices in the network that the channel is being requested for use. Upon receiving the RTS message, a responding device sends an acknowledgement message in the form of a Clear to Send (CTS) message, indicating that the requesting device is permitted to proceed with data transmission. This exchange ensures that the channel is reserved and that other devices are aware of the ongoing transmission, reducing the likelihood of collisions. The method may also include additional steps such as determining the duration of the reservation, handling multiple reservation requests, and managing contention periods to prioritize certain transmissions. The RTS-CTS exchange is particularly useful in environments where multiple devices compete for access to the same communication channel, such as in Wi-Fi networks or other wireless communication protocols. By using standardized messages like RTS and CTS, the method ensures compatibility with existing communication protocols while improving channel access efficiency.
6. The method of claim 1 , wherein the reservation transmission type comprises at least one of: a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or a combination thereof.
This invention relates to wireless communication systems, specifically methods for managing reservation transmissions to improve channel access efficiency. The problem addressed is the need for reliable and efficient coordination of communication between devices in shared wireless environments, where multiple devices compete for access to the same communication channel. Existing systems often suffer from collisions, delays, or inefficient use of bandwidth due to suboptimal reservation mechanisms. The invention describes a method for transmitting reservation signals in a wireless network, where the reservation transmission type can include various message formats. These formats may consist of a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or any combination of these. The preamble serves as a synchronization signal to establish communication timing. The reservation message indicates a device's intent to transmit data, while RTS and CTS messages are used to negotiate channel access between transmitting and receiving devices. Acknowledgement messages confirm successful reception of data. By supporting multiple reservation types, the method allows flexible and adaptive coordination, reducing collisions and improving overall network performance. The system dynamically selects the appropriate reservation format based on network conditions, ensuring efficient channel utilization and minimizing interference. This approach enhances reliability and throughput in dense wireless environments.
7. The method of claim 1 , wherein the transmission interval is a first transmission interval, the method further comprising: identifying a second priority of the wireless device for a second transmission interval of the radio frequency spectrum band, the second priority different from the priority of the wireless device for the first transmission interval.
This invention relates to wireless communication systems, specifically methods for managing transmission intervals in shared radio frequency spectrum bands. The problem addressed is the need to dynamically adjust transmission priorities for wireless devices to optimize spectrum usage and reduce interference in shared environments. The method involves determining a priority for a wireless device during a first transmission interval in a shared radio frequency spectrum band. The priority is based on factors such as device type, service requirements, or network conditions. The method further includes identifying a second priority for the same wireless device during a second transmission interval, where the second priority differs from the first. This allows the system to adapt transmission priorities over time, ensuring efficient spectrum utilization and minimizing conflicts between devices. The method may also involve comparing the priority of the wireless device with priorities of other devices to determine transmission opportunities. If the wireless device has a higher priority, it may be granted access to the spectrum band during the transmission interval. If another device has a higher priority, the wireless device may defer transmission or adjust its operations accordingly. The dynamic adjustment of priorities ensures fair and efficient sharing of the spectrum among multiple devices.
8. The method of claim 1 , further comprising: monitoring the radio frequency spectrum band during each CCA slot of the number of CCA slots associated with a higher priority than the identified priority of the wireless device, wherein each CCA slot of the number of CCA slots comprises a preamble transmission portion and a guard period portion.
This invention relates to wireless communication systems, specifically methods for managing channel access in radio frequency spectrum bands. The problem addressed is ensuring efficient and fair access to shared communication channels while minimizing collisions and interference, particularly in environments where multiple devices operate at different priority levels. The method involves a wireless device identifying its priority level and determining a number of clear channel assessment (CCA) slots associated with that priority. Each CCA slot includes a preamble transmission portion and a guard period portion. The device monitors the radio frequency spectrum band during each CCA slot that has a higher priority than its own. This monitoring helps the device assess channel availability and avoid collisions with higher-priority transmissions. The method ensures that higher-priority devices gain access to the channel first, while lower-priority devices defer appropriately. The preamble transmission portion allows devices to detect ongoing transmissions, and the guard period portion provides a buffer to prevent overlapping signals. This approach improves channel utilization and reduces contention in shared wireless environments.
9. An apparatus for wireless communication at a wireless device, comprising: a processor; memory in electronic communication with the processor; and instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to: identify a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities, wherein the priority of the wireless device is based at least in part on a proximity of the transmission interval to a sub-interval; identify an absence of a reservation transmission type associated with a second wireless device having a higher priority during each CCA slot of the number of clear channel assessment (CCA) slots of the transmission interval based at least in part on monitoring the radio frequency spectrum band during the number of CCA slots, each of the number of CCA slots being associated with a higher priority than the identified priority of the wireless device, the transmission interval corresponding to fixed time resources in a frame; and communicate over the radio frequency spectrum band for a remainder of the transmission interval subsequent to the number of CCA slots in the frame, the communicating based at least in part on the identified absence of the reservation transmission type associated with the second wireless device in each CCA slot of the number of CCA slots associated with the higher priority than the priority of the wireless device, and the communicating comprising receiving data and transmitting data subsequent to the receiving data over the radio frequency spectrum band during the transmission interval.
This invention relates to wireless communication systems where multiple network entities share a radio frequency spectrum band. The problem addressed is efficient spectrum utilization while ensuring fair access among devices with different priorities. The apparatus includes a processor and memory storing instructions to manage wireless communication. The device identifies its priority for a transmission interval within a shared spectrum band, where priority is determined by proximity to a sub-interval. The device monitors the spectrum during clear channel assessment (CCA) slots, checking for reservation transmissions from higher-priority devices. If no such transmissions are detected in any CCA slot, the device proceeds to communicate over the spectrum for the remaining duration of the transmission interval. Communication involves receiving data followed by transmitting data. The system ensures that lower-priority devices only access the spectrum when higher-priority devices are inactive, optimizing spectrum usage while maintaining fairness. The transmission interval corresponds to fixed time resources within a frame, and the CCA slots are associated with higher-priority levels than the device's own priority. This approach prevents collisions and ensures orderly spectrum sharing among multiple network entities.
10. The apparatus of claim 9 , wherein the instructions to cause the apparatus to communicate comprise instructions to cause the apparatus to: transmit a preamble over the radio frequency spectrum band, the preamble transmitted in a CCA slot of the transmission interval, the CCA slot allocated for the wireless device based at least in part on the identified priority of the wireless device.
This invention relates to wireless communication systems, specifically methods for managing transmission intervals in shared radio frequency spectrum bands. The problem addressed is efficient and fair allocation of transmission opportunities among multiple wireless devices, particularly in unlicensed or shared spectrum environments where contention-based access is common. The apparatus includes a processor and memory storing instructions that, when executed, configure the device to communicate in a shared radio frequency spectrum band. The device identifies a priority level for a wireless device, which determines its access rights to the spectrum. The device then allocates a Clear Channel Assessment (CCA) slot within a transmission interval based on this priority. During this slot, the device transmits a preamble to initiate communication. The priority-based allocation ensures higher-priority devices gain access to the spectrum more quickly, reducing contention and improving efficiency. The system may also include mechanisms to adjust transmission parameters, such as power or modulation, based on the priority level or channel conditions. This approach optimizes spectrum utilization while maintaining fairness among competing devices.
11. The apparatus of claim 10 , wherein the instructions, when executed by the processor, cause the apparatus to: signal a length of the transmission interval in the preamble.
A system for wireless communication includes a transmitter configured to send data packets with a preamble that signals the length of the transmission interval. The preamble contains synchronization and control information to facilitate proper reception and decoding of the data payload. The system dynamically adjusts the transmission interval length based on network conditions, such as interference or channel quality, to optimize throughput and reliability. The transmitter encodes the interval length in the preamble, allowing the receiver to prepare for the incoming data stream without additional signaling overhead. This approach reduces latency and improves efficiency in wireless networks by eliminating the need for separate control messages to convey transmission timing. The system is particularly useful in high-density environments where rapid adaptation to changing conditions is critical. The apparatus may include a processor executing instructions to implement these functions, ensuring flexibility and scalability across different wireless standards. The preamble structure is designed to balance overhead with performance, ensuring reliable communication while minimizing resource usage.
12. The apparatus of claim 9 , wherein the instructions to cause the apparatus to communicate comprise instructions to cause the apparatus to: transmit a reservation message over the radio frequency spectrum band, the reservation message transmitted in a CCA slot of the transmission interval, the CCA slot associated with the priority of the wireless device; detect, in the CCA slot, an acknowledgement message transmitted over the radio frequency spectrum band in response to the reservation message; and transmit or receive data over the radio frequency spectrum band, during the transmission interval, based at least in part on the detecting of the acknowledgement message.
This invention relates to wireless communication systems, specifically addressing efficient spectrum utilization and collision avoidance in shared radio frequency bands. The problem solved involves managing communication in a shared spectrum where multiple devices compete for access, requiring mechanisms to reserve transmission opportunities while minimizing interference. The apparatus includes a processor and memory storing instructions that, when executed, enable communication over a radio frequency spectrum band. The apparatus transmits a reservation message during a clear channel assessment (CCA) slot within a transmission interval. The CCA slot is selected based on the priority of the wireless device, ensuring higher-priority devices access the spectrum first. The reservation message signals intent to transmit or receive data. If an acknowledgement message is detected in response during the same CCA slot, the apparatus proceeds to transmit or receive data during the designated transmission interval. This ensures coordinated access, reducing collisions and improving spectrum efficiency. The system dynamically adjusts based on detected acknowledgements, optimizing real-time communication. The invention enhances reliability in shared spectrum environments by prioritizing devices and confirming reservations before data transmission.
13. The apparatus of claim 12 , wherein the reservation message comprises a Request to Send (RTS) message and the acknowledgement message comprises a Clear to Send (CTS) message.
This invention relates to wireless communication systems, specifically addressing the challenge of efficient channel reservation and collision avoidance in shared communication environments. The apparatus includes a transmitter configured to send a reservation message to reserve a communication channel for data transmission, and a receiver configured to receive an acknowledgement message confirming the reservation. The reservation message is a Request to Send (RTS) message, and the acknowledgement message is a Clear to Send (CTS) message. The RTS message signals intent to transmit data, while the CTS message confirms channel availability and grants permission to proceed. This mechanism ensures coordinated access to the communication channel, reducing collisions and improving transmission efficiency. The apparatus may also include a controller to manage message timing and a memory to store transmission parameters. The system operates in environments where multiple devices compete for channel access, such as Wi-Fi networks or other wireless protocols using carrier sense multiple access with collision avoidance (CSMA/CA). The RTS/CTS exchange helps mitigate hidden node problems, where devices outside each other's detection range might otherwise interfere with ongoing transmissions. The apparatus may further include error detection and retransmission features to handle failed reservations or acknowledgements. Overall, the invention enhances reliability and throughput in shared wireless communication channels by formalizing the reservation process through standardized RTS and CTS messages.
14. The apparatus of claim 9 , wherein the reservation transmission type comprises at least one of: a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or a combination thereof.
This invention relates to wireless communication systems, specifically addressing the need for efficient channel reservation mechanisms to prevent collisions and improve data transmission reliability. The apparatus includes a transmitter configured to send a reservation signal to reserve a communication channel before transmitting data. The reservation signal can take various forms, including a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or a combination of these. The transmitter dynamically selects the appropriate reservation type based on network conditions, such as interference levels or traffic load, to optimize channel usage. The apparatus also includes a receiver to detect and process incoming reservation signals from other devices, ensuring coordinated access to the shared channel. By using these reservation mechanisms, the system reduces collisions, minimizes retransmissions, and enhances overall throughput in wireless networks. The invention is particularly useful in dense or high-interference environments where traditional contention-based protocols are inefficient. The apparatus may be integrated into wireless access points, user devices, or other network nodes to improve communication reliability and efficiency.
15. The apparatus of claim 9 , wherein the transmission interval is a first transmission interval, the instructions, when executed by the processor, further causing the apparatus to: identify a second priority of the wireless device for a second transmission interval of the radio frequency spectrum band, the second priority different from the priority of the wireless device for the first transmission interval.
This invention relates to wireless communication systems, specifically managing transmission intervals in shared radio frequency spectrum bands. The problem addressed is efficiently allocating and prioritizing transmissions in dynamic spectrum environments where multiple devices compete for access. The apparatus includes a processor and memory storing instructions that, when executed, enable the device to determine a priority for a first transmission interval in a shared radio frequency spectrum band. The device then identifies a different priority for a second transmission interval in the same band, allowing flexible adaptation to varying conditions. This prioritization helps optimize spectrum usage, reduce interference, and improve communication reliability. The apparatus may also include a transceiver for wireless communication and a memory for storing configuration data. The system dynamically adjusts transmission priorities based on factors such as device status, network conditions, or regulatory requirements, ensuring efficient spectrum utilization while maintaining compliance with communication protocols. The invention is particularly useful in scenarios where spectrum access is contested, such as in unlicensed or shared spectrum environments.
16. The apparatus of claim 9 , wherein the instructions, when executed by the processor, cause the apparatus to: monitor the radio frequency spectrum band during each CCA slot of the number of CCA slots associated with a higher priority than the identified priority of the wireless device, wherein each CCA slot of the number of CCA slots comprises a preamble transmission portion and a guard period portion.
This invention relates to wireless communication systems, specifically to apparatuses and methods for monitoring radio frequency spectrum bands during clear channel assessment (CCA) slots. The problem addressed is the need for efficient spectrum monitoring in wireless networks, particularly when multiple devices operate at different priority levels. The invention provides an apparatus with a processor and memory storing instructions that, when executed, enable the apparatus to monitor the radio frequency spectrum band during each CCA slot associated with a higher priority than the identified priority of a wireless device. Each CCA slot includes a preamble transmission portion and a guard period portion. The apparatus is configured to perform this monitoring to ensure proper channel access and interference avoidance. The invention may also involve determining the number of CCA slots based on the identified priority of the wireless device and adjusting the monitoring process accordingly. The apparatus may further include a transceiver for transmitting and receiving wireless signals and a controller for managing the monitoring process. The invention aims to improve spectrum utilization and reduce collisions in wireless communication networks by dynamically monitoring CCA slots based on priority levels.
17. An apparatus for wireless communication at a wireless device, comprising: means for identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities, the transmission interval corresponding to fixed time resources in a frame, wherein the priority of the wireless device is based at least in part on a proximity of the transmission interval to a sub-interval; means for identifying an absence of a reservation transmission type associated with a second wireless device having a higher priority during each CCA slot of the number of clear channel assessment (CCA) slots of the transmission interval based at least in part on monitoring the radio frequency spectrum band during the number of CCA slots, each of the number of CCA slots associated with a higher priority than the identified priority of the wireless device; and means for communicating over the radio frequency spectrum band for a remainder of the transmission interval subsequent to the number of CCA slots in the frame, the communicating based at least in part on the identified absence of the reservation transmission type associated with the second wireless device in each CCA slot of the number of CCA slots associated with the higher priority than the priority of the wireless device, and the communicating comprising receiving data and transmitting data subsequent to the receiving data over the radio frequency spectrum band during the transmission interval.
This invention relates to wireless communication systems where multiple network entities share a radio frequency spectrum band. The problem addressed is efficient spectrum utilization while ensuring fair access among devices with different priorities. The apparatus operates in a wireless device to manage transmissions within fixed time resources (frames) divided into transmission intervals. The device identifies its priority for a given transmission interval based on its proximity to a sub-interval, which likely defines a higher-priority time slot. The device then monitors the shared spectrum during multiple clear channel assessment (CCA) slots at the start of the transmission interval. Each CCA slot is associated with a higher priority than the device's own priority. If no reservation transmission (e.g., a signal indicating spectrum reservation by a higher-priority device) is detected in any of these CCA slots, the device proceeds to communicate over the spectrum for the remaining duration of the transmission interval. Communication includes both receiving and transmitting data, with reception occurring before transmission. This approach ensures that higher-priority devices can preempt access, while lower-priority devices can utilize the spectrum when it is available, improving spectrum efficiency and fairness.
18. The apparatus of claim 17 , wherein the means for communicating comprises: means for transmitting a preamble over the radio frequency spectrum band, the preamble transmitted in a CCA slot of the transmission interval, the CCA slot allocated for the wireless device based at least in part on the identified priority of the wireless device.
This invention relates to wireless communication systems, specifically addressing the challenge of efficient spectrum utilization in shared radio frequency bands. The apparatus includes a mechanism for communicating data over a radio frequency spectrum band, where the communication is prioritized based on the device's identified priority level. The apparatus transmits a preamble during a Clear Channel Assessment (CCA) slot within a transmission interval. The CCA slot is allocated to the wireless device based on its priority, ensuring higher-priority devices gain access to the channel more readily. This prioritization helps manage contention in shared spectrum environments, reducing collisions and improving overall network efficiency. The preamble transmission in the CCA slot allows the device to signal its presence and priority to other devices, facilitating coordinated access to the spectrum. The apparatus may also include additional features such as adjusting transmission parameters based on channel conditions or dynamically allocating CCA slots to optimize spectrum usage. The invention aims to enhance fairness and reliability in wireless communications by integrating priority-based access control into the transmission process.
19. The apparatus of claim 18 , further comprising: means for signaling a length of the transmission interval in the preamble.
A wireless communication apparatus includes a transmitter configured to send a preamble signal to establish a communication link with a receiving device. The preamble signal includes a synchronization sequence to enable the receiver to detect and align with the transmitted signal. The apparatus further includes a signaling mechanism that conveys the length of the transmission interval within the preamble. This allows the receiving device to determine the duration of the upcoming data transmission, enabling efficient synchronization and processing. The signaling mechanism may use a predefined field or encoding within the preamble to indicate the interval length, ensuring compatibility with existing communication protocols. This feature improves synchronization accuracy and reduces latency in wireless communication systems by providing explicit timing information upfront. The apparatus may be part of a wireless network node, such as a base station or a user device, operating in various frequency bands and modulation schemes. The transmission interval length signaling enhances reliability in dynamic environments where transmission durations may vary.
20. The apparatus of claim 17 , wherein the means for communicating comprises: means for transmitting a reservation message over the radio frequency spectrum band, the reservation message transmitted in a CCA slot of the transmission interval, the CCA slot associated with the priority of the wireless device; means for detecting, in the CCA slot, an acknowledgement message transmitted over the radio frequency spectrum band in response to the reservation message; and means for transmitting or receiving data over the radio frequency spectrum band, during the transmission interval, based at least in part on the detecting of the acknowledgement message.
This invention relates to wireless communication systems, specifically addressing efficient spectrum utilization in shared radio frequency bands. The problem solved is ensuring reliable and prioritized data transmission in environments where multiple devices compete for access to the same frequency spectrum. The apparatus includes a mechanism for communicating over a radio frequency spectrum band, which involves transmitting a reservation message during a clear channel assessment (CCA) slot within a transmission interval. The CCA slot is assigned based on the priority of the wireless device, ensuring higher-priority devices access the spectrum first. The apparatus also detects an acknowledgement message in the CCA slot, confirming successful reservation. If the acknowledgement is received, the device proceeds to transmit or receive data during the designated transmission interval. This method prevents collisions and optimizes spectrum usage by dynamically allocating access based on device priority and real-time channel conditions. The invention enhances communication efficiency in shared spectrum environments, such as those used in cognitive radio or unlicensed band applications.
21. The apparatus of claim 20 , wherein the reservation message comprises a Request to Send (RTS) message and the acknowledgement message comprises a Clear to Send (CTS) message.
This invention relates to wireless communication systems, specifically addressing the challenge of efficiently managing channel access and collision avoidance in shared communication environments. The apparatus includes a transmitter configured to send a reservation message to reserve a communication channel for data transmission, and a receiver configured to receive an acknowledgement message confirming the reservation. The reservation message is a Request to Send (RTS) message, and the acknowledgement message is a Clear to Send (CTS) message. The RTS message signals intent to transmit data, while the CTS message confirms channel availability and grants permission to proceed. This mechanism helps prevent collisions by ensuring that only one device transmits at a time, improving communication reliability in crowded networks. The apparatus may also include a controller to manage the timing and content of these messages, ensuring proper coordination between devices. The system is particularly useful in wireless local area networks (WLANs) and other environments where multiple devices compete for shared bandwidth. By using standardized RTS/CTS protocols, the apparatus ensures compatibility with existing communication standards while enhancing efficiency and reducing interference.
22. The apparatus of claim 17 , wherein the reservation transmission type comprises at least one of: a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or a combination thereof.
This invention relates to wireless communication systems, specifically to methods and apparatus for managing reservations in shared communication channels. The problem addressed is the efficient coordination of data transmissions in environments where multiple devices compete for access to a shared medium, such as in Wi-Fi or other wireless networks. Collisions and inefficient use of bandwidth can occur when devices transmit without proper synchronization or reservation mechanisms. The apparatus includes a transmitter configured to send a reservation signal to reserve a communication channel for a subsequent data transmission. The reservation signal can take various forms, including a preamble, a reservation message, a Request to Send (RTS) message, an acknowledgement message, a Clear to Send (CTS) message, or a combination of these. The apparatus also includes a receiver to detect reservation signals from other devices and a controller to manage the timing and content of the reservation signals. The controller ensures that the reservation signal is transmitted in a manner that minimizes collisions and maximizes channel utilization. The system may also include mechanisms to handle dynamic changes in network conditions, such as adjusting reservation parameters based on interference levels or network load. The goal is to improve communication efficiency by reducing contention and ensuring orderly access to the shared channel.
23. The apparatus of claim 17 , wherein the transmission interval is a first transmission interval, the apparatus further comprising: means for identifying a second priority of the wireless device for a second transmission interval of the radio frequency spectrum band, the second priority different from the priority of the wireless device for the first transmission interval.
This invention relates to wireless communication systems, specifically to managing transmission intervals for wireless devices in a shared radio frequency spectrum band. The problem addressed is the need for flexible and efficient spectrum utilization, particularly when multiple devices compete for access to the same frequency resources. The invention provides an apparatus that dynamically adjusts transmission intervals based on device priorities, ensuring fair and optimized spectrum usage. The apparatus includes means for determining a priority of a wireless device for a first transmission interval in a shared radio frequency spectrum band. This priority dictates the device's access rights or scheduling preferences during that interval. Additionally, the apparatus identifies a second priority for the same wireless device during a second transmission interval, where the second priority differs from the first. This allows the device's access rights to vary over time, adapting to changing network conditions or device requirements. The apparatus may also include means for adjusting transmission parameters, such as power levels or modulation schemes, based on the identified priorities. This ensures that higher-priority transmissions receive appropriate resources while lower-priority transmissions are managed efficiently. The invention improves spectrum efficiency and reduces interference in shared wireless environments.
24. The apparatus of claim 17 , further comprising: means for monitoring the radio frequency spectrum band during each CCA slot of the number of CCA slots associated with the higher priority than the identified priority of the wireless device, wherein each CCA slot of the number of CCA slots comprises a preamble transmission portion and a guard period portion.
This invention relates to wireless communication systems, specifically to apparatuses for managing radio frequency spectrum access in environments where multiple devices compete for channel access. The problem addressed is ensuring efficient and fair spectrum utilization while minimizing collisions between devices of different priorities. The apparatus includes a mechanism for monitoring the radio frequency spectrum band during each Clear Channel Assessment (CCA) slot associated with higher priority devices than the wireless device in question. Each CCA slot is divided into two portions: a preamble transmission portion, where devices transmit synchronization or control signals, and a guard period portion, which acts as a buffer to prevent overlap between transmissions. By monitoring these slots, the apparatus can determine whether higher-priority devices are actively using the channel before proceeding with its own transmission. This helps prioritize critical communications while maintaining system efficiency. The apparatus may also include additional features, such as adjusting transmission parameters based on detected activity in the monitored slots or dynamically allocating time slots to different priority levels. The overall goal is to improve spectrum sharing in dense wireless networks by ensuring that higher-priority traffic is given precedence while lower-priority devices adapt their behavior accordingly.
25. A non-transitory computer-readable medium storing code for wireless communication at a wireless device, the code comprising instructions executable to: identify a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities, the transmission interval corresponding to fixed time resources in a frame, wherein the priority of the wireless device is based at least in part on a proximity of the transmission interval to a sub-interval; identify an absence of a reservation transmission type associated with a second wireless device having a higher priority during each CCA slot of the number of clear channel assessment (CCA) slots of the transmission interval based at least in part on monitoring the radio frequency spectrum band during the number of CCA slots, each of the number of CCA slots associated with a higher priority than the identified priority of the wireless device; and communicate over the radio frequency spectrum band for a remainder of the transmission interval subsequent to the number of CCA slots in the frame, the communicating based at least in part on the identified absence of the reservation transmission type associated with the second wireless device in each CCA slot of the number of CCA slots associated with the higher priority than the priority of the wireless device, and the communicating comprising receiving data and transmitting data subsequent to the receiving data over the radio frequency spectrum band during the transmission interval.
This invention relates to wireless communication in shared radio frequency spectrum bands, addressing challenges in coordinating access among multiple network operating entities. The system involves a wireless device that determines its priority for a specific transmission interval within a shared spectrum band, where the interval consists of fixed time resources in a frame. The priority is influenced by the proximity of the transmission interval to a sub-interval, which may represent a higher-priority time segment. The wireless device monitors the spectrum during a set of clear channel assessment (CCA) slots within the transmission interval. Each CCA slot is associated with a higher priority than the device's own priority. If no reservation transmission from a higher-priority device is detected in any of these CCA slots, the wireless device proceeds to communicate over the spectrum for the remaining duration of the transmission interval. This communication includes both receiving and transmitting data, with the transmission occurring after the reception phase. The approach ensures fair and efficient spectrum utilization by prioritizing higher-priority devices while allowing lower-priority devices to access the spectrum when it is available.
26. The non-transitory computer-readable medium of claim 25 , wherein when the instructions are executed to communicate, the instructions are further executable to: transmit a preamble over the radio frequency spectrum band, the preamble transmitted in a CCA slot of the transmission interval, the CCA slot allocated for the wireless device based at least in part on the identified priority of the wireless device.
This invention relates to wireless communication systems, specifically methods for managing transmissions in shared radio frequency spectrum bands. The problem addressed is efficient and fair allocation of transmission opportunities among multiple wireless devices operating in unlicensed or shared spectrum, where contention-based access is required to avoid interference. The invention describes a system where a wireless device identifies its priority level for accessing the spectrum. Based on this priority, the device is allocated a specific Clear Channel Assessment (CCA) slot within a transmission interval. The CCA slot is a time period during which the device checks for channel availability before transmitting. The device then transmits a preamble signal during its allocated CCA slot to initiate communication. This preamble helps other devices detect the ongoing transmission and avoid collisions. The priority-based allocation ensures higher-priority devices get earlier access, improving fairness and reducing contention delays. The system may also include mechanisms for adjusting priority levels dynamically based on network conditions or device requirements. This approach enhances spectrum utilization while minimizing interference in shared wireless environments.
27. The non-transitory computer readable medium of claim 26 , wherein the instructions are further executable to: signal a length of the transmission interval in the preamble.
The invention relates to wireless communication systems, specifically to methods for signaling transmission interval lengths in wireless data transmissions. The problem addressed is the need for efficient and reliable communication of transmission interval durations between devices in a wireless network, particularly in scenarios where dynamic adjustments to transmission intervals are required. The invention involves a non-transitory computer-readable medium storing instructions that, when executed by a processor, perform operations related to wireless communication. The instructions include signaling a length of the transmission interval in the preamble of a wireless transmission. The preamble is a header or introductory segment of the transmission that contains control information. By including the transmission interval length in the preamble, receiving devices can quickly determine the duration of the upcoming data transmission without needing additional signaling or negotiation, improving efficiency and reducing latency. The invention may also involve other related operations, such as determining the transmission interval length based on network conditions, device capabilities, or application requirements. The signaling of the transmission interval length in the preamble allows for dynamic adjustments to transmission durations, enabling adaptive communication strategies in response to changing network conditions. This approach is particularly useful in wireless networks where transmission intervals may vary due to factors like interference, channel quality, or power constraints. The invention enhances communication reliability and efficiency by ensuring that both transmitting and receiving devices are synchronized on the transmission interval duration from the out
28. The non-transitory computer readable medium of claim 25 , wherein when the instructions are executed to communicate, the instructions are further executable to: transmit a reservation message over the radio frequency spectrum band, the reservation message transmitted in a CCA slot of the transmission interval, the CCA slot associated with the priority of the wireless device; detect, in the CCA slot, an acknowledgement message transmitted over the radio frequency spectrum band in response to the reservation message; and transmit or receive data over the radio frequency spectrum band, during the transmission interval, based at least in part on the detecting of the acknowledgement message.
This invention relates to wireless communication systems, specifically methods for managing data transmission in shared radio frequency spectrum bands. The problem addressed is efficient and reliable communication in environments where multiple devices compete for access to the same frequency band, such as in unlicensed or shared spectrum scenarios. The solution involves a priority-based reservation mechanism to reduce collisions and improve data transmission reliability. The system includes a wireless device configured to transmit a reservation message in a Clear Channel Assessment (CCA) slot of a transmission interval. The CCA slot is selected based on the priority of the wireless device, ensuring higher-priority devices access the channel first. The reservation message signals intent to use the spectrum for data transmission. If the wireless device detects an acknowledgement message in response to the reservation message, it proceeds to transmit or receive data during the transmission interval. The acknowledgement confirms that the reservation was successful and no other device is using the channel. This method ensures that only devices with valid reservations proceed with data transmission, reducing collisions and improving spectrum utilization efficiency. The system may also include mechanisms to handle failed reservations, such as retrying or adjusting transmission parameters.
29. The non-transitory computer readable medium of claim 28 , wherein the reservation message comprises a Request to Send (RTS) message and the acknowledgement message comprises a Clear to Send (CTS) message.
This invention relates to wireless communication systems, specifically to methods for managing channel access and reducing collisions in shared communication mediums. The problem addressed is the inefficiency and potential collisions that occur when multiple devices attempt to transmit data simultaneously in a shared wireless environment, such as Wi-Fi networks. The solution involves a system where a device sends a reservation message to reserve the communication channel before transmitting data, and another device responds with an acknowledgement message to confirm the reservation. This mechanism helps coordinate transmissions and prevent overlapping data transfers. The reservation message is a Request to Send (RTS) message, which signals the intent to transmit data. The acknowledgement message is a Clear to Send (CTS) message, which grants permission to proceed with the transmission. The RTS and CTS messages are exchanged before the actual data transmission, ensuring that the channel is clear and reducing the likelihood of collisions. This method is particularly useful in dense wireless networks where multiple devices compete for access to the same communication channel. The system may also include additional features, such as adjusting transmission parameters based on network conditions or prioritizing certain types of traffic to improve overall efficiency. The invention aims to enhance reliability and throughput in wireless communications by minimizing conflicts and optimizing channel usage.
30. The non-transitory computer readable medium of claim 25 , wherein, the transmission interval is a first transmission interval, and wherein the instructions are further executable to: identify a second priority of the wireless device for a second transmission interval of the radio frequency spectrum band, the second priority different from the priority of the wireless device for the first transmission interval.
This invention relates to wireless communication systems, specifically managing transmission intervals in shared radio frequency spectrum bands. The problem addressed is efficiently allocating and prioritizing transmissions in dynamic spectrum environments where multiple devices compete for access. The solution involves a computer-readable medium storing instructions for a wireless device to determine and adjust transmission priorities across different intervals. The device identifies a first priority for a first transmission interval and a second, different priority for a second interval in the same frequency band. This allows flexible adaptation to varying conditions, such as interference levels or traffic demands, optimizing spectrum utilization. The system may also include mechanisms to coordinate with other devices, ensuring fair access while maintaining performance. The invention is particularly useful in unlicensed or shared spectrum scenarios where dynamic priority management is critical for coexistence. The technical approach leverages programmable instructions to dynamically assess and assign priorities, improving efficiency over static allocation methods.
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April 12, 2017
January 14, 2020
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